Lock for narrow stile doors



May 27, 1958 R.-w..wA|.'rERs V Locx FOR NARROW STILE nobas 3 Sheets-Sheet 1 Filed 3 m; 25', 1955 IN V EN TOR. n /1 fa/fzrv ATTORNfY May 27, "1958 R.'W. WALTERS 2,836,

LOOK FOR NARROW STILE DOORS Filed April 25, 1955 3 Sheets-Sheet 2- D I A0 4 53a '53 711 46 47a IL-1: 5 I 5/45 17 IN VEN TOR.

ATTORNEY y 7, 1958 R. w. WALTERS 2,836,051

1.00:; FOR NARRdw STILE DOORS mm April 25. 1955 3 Sheets-Sheet s INVENTOR.

ATTORNEY United States Patent LocK non NARROW sTrLE nouns Russell W. Waiters, Valley Forge, Pa., assignor to The Yale & Towne Manufacturing Company, Stamford, Conn, a corporation of Connecticut Application April 25, 1955, Serial No. 503,638

19 Claims. (Cl. 79-151) This invention relates to a narrow backset lock for doors with narrow stiles. I particularly contribute by my invention a narrow stile lock having novel means for controlling and deadlocking the lock bolt.

Those persons skilled in the art will understand that narrow stile locks have very limited space available for the lock mechanism. This creates a considerable problem, particularly in the designing of satisfactory means that will act automatically for deadlocking the bolt. The bolt itself must be short in order that it may move to retracted position in the lock, yet the deadlocking means must be arranged to coact with the bolt when fully projected. The lock mechanism naturally includes manual or key operated means that move the bolt and that simultaneously control the deadlocking action. All of this structure must'operate in the very short space that is available in a narrow stile lock.

it will be appreciated also that it is very desirable to construct the bolt as a latchbolt that is deadlocked, but that can be depressed through engagement with a strike. However, a further problem is involved in utilizing such an arrangement in a narrow stile lock, since additional means for controlling the deadlocking action must then be mounted in the short space within the lock. in conventional locks, it is customary to utilize a trigger bolt for this purpose, as will be appreciated, but a trigger bolt requires considerable space Within the lock and prior art constructions are not suited to narrow stile locks. In the narrow stile lock that I have now conceived, I utilize deadlocldng means that have very considerable advantages over the prior art, and that enable me particularly to equip the lock with a latchbolt and a trigger bolt that controls the deadlocking of the latchbolt.

As an important feature of my invention, 1 utilize in my lock a novel deadlocking tumbler that, together with the coacting parts of the lock, may be utilized in a relatively short space in the lock. More particularly, I form the deadlocking tumbler with surfaces through which it is in direct coacting relation to a trigger bolt, a latchbolt, and actuating means for the tumbler, and I do not require intermediate parts for the tumbler action. I prefer to arrange these tumbler surfaces one above the other, so that the tumbler will coact with both bolts and the actusting means at points that are substantially aligned in a vertical direction. The tumbler itself moves Vertically, and this together with the particular form of the tumbler enables me to arrange the lock mechanism in a very narrow lock case.

As a further feature, I so construct my lock that the deadlocking tumbler can dog the latchbolt in retracted position. When acting in this way, the tumbler again coacts with the latchbolt and tumbler actuating means at points that are substantially aligned in a vertical direction. Of course, the tumbler and trigger bolt are not then in coacting relation, since the trigger bolt is effective only when the latchbolt is projected.

I have thus outlined rather broadly the more important "ice features of my invention in order that the detailed description thereof that follows may be better understood, and in order that my contribution to the art may be better appreciated. There are, of course, additional features of my invention that will be described hereinafter and which will form the subject of the claims appended hereto. Those skilled in the art will appreciate that the conception on which my disclosure is based may readily be utilized as a basis for the designing of other structures for carrying out the several purposes of my invention. It is important, therefore, that the claims be regarded as including such equivalent constructions as do not depart from the spirit and scope of my invention, in order to prevent the appropriation of my invention by those skilled in the art.

In the drawings:

Fig. l is a perspective View of my novel narrow stile lock.

Pig. 2 is a side view of my lock with a part of the lock case removed.

Fig. 3 is similar to Fig. 2, but With the bolt dogged in looking position and engaged with a strike.

Fig. 4 shows the key plug cam moving the deadlocking tumbler out of dogging position preparatory to retracting the bolt.

Fig. 5 shows the bolt retracted by the key plug cam and dogged in this position by the tumbler.

Pig. 6 shows the bolt retracted through engagement with the strike. 7

Fig. 7 is a detail view of my novel deadlocking tumbler.

Fig. 8 is an exploded View showing parts of my lock.

Pig. 9 shows my novel deadlocking tumbler utilized with a deadbolt.

Referring now more particularly to Fig. l of the drawings, i show my novel lock equipped with a rectangular case Eli having a front plate 11, and a side 12 that is removable for the purpose of assembling the lock mechanism. The particular construction of the lock case It) is not important to an understanding of my invention, but it should be observed that the case is quite short from front to back so that the lock can be mounted in a very narrow door stile. I further show the lock equipped with a bevelled latchbolt 13 and a trigger bolt 14 that slide between projected and retracted positions on the case. i shall describe the bolts 13, 14 in greater detail, but it will be best to state first that the latchbolt 13 and trigger bolt 14 coact with a strike in the usual way. Thus, upon closing of the door, the bevelled surface of the latchbolt 13, moves against the strike and this bolt together with trigger bolt 14 are depressed by the strike, as in Fig. 6 of the drawings. The latchbolt 13 then moves to projected position behind the strike while the strike holds trigger bolt 14 depressed, as will be understood by those skilled in the art, and as I show in Fig. 3, thereby effecting deadlocking of the latchbolt 13.

The latchbolt 13 and trigger bolt 14 are necessarily short, as may be clearly seen in the drawings, so that these bolts can move to retracted position in the narrow case 19. For guiding the bolt movement, a lug 15 on latchbolt 13, shown in detail in Fig. 8, moves in a slot 16 in the lock case 19, as may be seen in Fig. l. A lug 17 on trigger bolt 14 moves similarly in a slot 13. A coil spring 19 is engaged between latchbolt 13 and the back of case it? to press the bolt toward projected position, and

* a coil spring 219 similarly presses the trigger bolt 14. As

is usual in trigger bolt mechanisms, the trigger bolt 14 is retracted through a retracting movement of latchbolt 13, and for the particular purpose 1 form trigger bolt 14 with a spline 28, best seen in Fig. 8, that is engaged in a slot 29 in latchbolt 13. For retracting the latchbolt 13, I show the lock case 1% equipped at each side with a conventional .lock cylinder 30.having a rotating keyplug on which is acam 31. It isto be understood, however, that I may very well utilize a handle for rotating a cam 31 at one side of the lock. I form the upper portion of latchbolt 13, witha vertical slothaving opposed surfaces 32, 33 against which eithercam 31 i s adapted to move 7 whereby; to slide the latchbolt to projected or retracted positions; .1: y V.

Fordeadlocking the latchbolt 13 ofmy extremely novel I lock,-I utilize a tumbler 34, best seen in Fig.7, that moves relation to latchbolt lug through upward movement of tumbler 34, as may be seen in Fig. 3, when the latchbolt 13 isjn projected position; The tumbler 34 is then in dogging position, and deadlocks the'latchbolt 13. I shall describe; in detailthe manner in which the trigger bolt 14 controls this dogging action of tumbler 34, but it will be well first to describe the means I utilize for moving the tumbler,

' For the particular purpose, I mount/a cam 38 to slide in a vertical=groove 39 that is formed in one side of' -latchbolt'13, as well shown in Fig. 8. 'Sincethe latchbolt lug 15 is positioned actually in groove39, I form cam 38 witha slot 40 that enables the'cam to move relatively tothe lug.-Th rough -the particular arrangement, the

carn38 move s bodily with latchbolt 13 as the bolt moves between projected and retracted positions, but slides vertically relatively to the latchbolt. On'the upper portion of earn 38 is a horizontal arm 41lying intermediate the'surfaces 32, 33 of the latchbolt slot. Below the arm 41, I form the latchbolt 13 with a .bore 42, Fig. 8, in which l mount a coil spring 43a that acts against'arm 41 to press the earn 38 upwardly. Further, cam 38 has at it's outer side an integral lug 43, v

I particularly form the upper part of tumbler 34 with an inclined portion 44 (Fig. 7) under which cam lug 43'moves whenlatchbolt 13 moves'to projected position, as'in Fig. 3. The'upward spring pressure of the cam 3 8 thereby actslagain st tumbler 34 for moving the tumblerto dogging position, It should be observed that the V: 'inclined tumbler portion 44 is directly above the dead locking surface 37 on the tumbler so that the deadlocking and tumbler actuation take place at points that are substantially alignedvertically. This arrangement, to-

gether with'furtherfeatures that I shall describe, enables the tumbler to coact with the latchbolt 13 an'd sliding cam 38 in my extremely narrow lock. a

'. Referring now to Fig. 4, it will be seen that either keyplug cam 31, when rotating to retract thelatchbolt 13, will move against the arm 41 on sliding cam 38 and will thereby depressythis cam 38. further that'I form the tumbler'34 with a surface 47 It will be observed opposed to theinclined tumbler portion 44.- By depressj ing the sliding cam 38, the keyplug cam 31 moves the lug 43 against thetumbler surface 47, and thereby moves tumbler 34 downwardlyto release position, as clearly shown in Fig. 4, with the free slot 36 opposite latchbolt lug 15. This enables the keyplug cam 31 by continuing its rotation to move the latchbolt 13' to fully retracted position, as in Fig. 5. e a

we I prefer to utilizetlietumbler 34 also for doggingthe latchbolt in retracted position, as may be seen in. Fig. 5,.

For this purpose, I formthe rear end of the tumblerslot 36 with a notch. having a'rea rwardly disposed dogging s'urface45, as bestiseen in Fig.7." .I further form the upper. part of;tumbler 34 with a'portion 46 under which At f the cam lug 43 will engage,

in slot 18 in the side of the lock case, Fig. 1.

as in Fig. 5, bolt 13 is moved by one of the keyplug cams 31 to retracted position. Whenlug 43 is thus engaged, the keyplug cam 31 by its rotation moves away from sliding cam 38 and over an upper portion 33a on'latchbolt 13.

Through its engagement with latchbolt portion 33a, the

keyplug cam 31 holds latchbolt 13 in retracted position against the pressure of latchbolt spring 19. With keyplug cam 31 acting'in this way, the spring pressure of cam 33 is effective through lug 43 to press the tumbler upwardly to dogging position. Tumbler surface 45 is then in opposed relation to the latchbolt lug 15, and.

holds the latchbolt retracted. 'The keyplug cam 31 will naturally continue its rotation until it'reaches a neutral position, and'will not then be engaged'with the'latchbolt portion 33th. 'In opposed relation [to the tumbler portion 4d, 1 form the tumbler, 34-witha surface 47a that'is the counterpart of the surface 47. Therefore,

when-the keyplug cam '31 rotates clockwise in 'Fig.. 5, it

moves tumbler 34 downwardly out of dogging position, with further rotation of plug cam 31 projecting the latchbolt. f f 1 I shall now describe the novel arrangement whereby the trigger bolt 14 controls thetumbler 34. 7 It will be rememberedthat the lug 17. on the trigger bolt 14 moves When so moving, the lug 17 moves relatively to an opening 18a in tumbler34,jFig. 7. Directly belowthe deadlocking surface 37, 'Iform opening 18a of tumbler 34 with an inclined surface 46:1 with which" trigger. lug 17 coacts when the trigger 14 is in projected position, as is best shown in Fig.2, forholding tumbler 34 out of deadlock} ing relation to latchboltlug 15.: While I prefer to use the'rel'atively large-opening'18a to form the tumbler surface 46a, I do not wish to be limited to an opening since the surface 46:: may very'wellbejformed on a projecting'part of i the tumbler. cipally that the trigger bolt lug 17 moves directly against the inclined tumbler surface,46a', and coacts with this portion 46a, moreover, at apoint' that is substantially aligned in a vertical direction relatively to the deadlocking surface 37 and the .tumbler actuating portion 44. [It

will be realized, of course, that it is the spring pressure of trigger bolt 14 that acts against the inclined surface 0 46a through lug 17 for holding tumbler34'in a lower 'or release position, as in Fig. 2. To do this, the spring pressure of the'trigger bolt overcomes the pressure of the spring 43 that tends always to hold tumbler 34 in its deadlocking position of'Fig. 3.]. v f

'To enable the latchbolt spring. 19 to move the latchbolt'13 to projected position in the strike, 1' form the 7 upper tumbler portions 44, 46 in spaced relation to one another, as is clearly shown in the drawings. Thus, when the latchbolt 13'is' depressed by the strike A, 'as in Fig.

7 6, the spring pressure of the isliding' cam 38 causes the cam lug 43 to move above the, tumbler portion 46, so that this lug does not then move tumbler 34 to dogging position. In other words, the cam lug 43 coacts with the tumbler portion 46. only when the keyplug cam 31 retracts the latchbolt 13,"a's in Fig, 5, and tumbler 34 does not move to 'doggingposition' when the-strikedepresses the latchbolt 13.-

In the novel structurethat I have'thus far described, I utilize the tumbler 34 for controlling a latchbolt, but I can very well utilizethis tumbler for controlling a dead bolt 48,'as is' shown in Fig. 9. 'I show bolt 48 assembled with a spring 19 like that utilized to press latchbolt 13 to projected position,butl shall refer to'bolt 48 as a dead bolt since it enables me to achieve the type of action contributed by a conventional deadbolt. My lock when constructed with the dead bolt 48'has inmostrespects thesameistructure that I have already described. Of

course,-dead bolt 48 does not have a bevel as does'latch- V 7 bolt 13, and'the tumbler in this case will be actuated only by the lgeyplug cam 31. In other words, this'particular when the latch- It is'necessary to know printype of lock does not have a trigger bolt for controlling the tumbler I can, however, utilize the same tumbler 3d, and I can standardize to a very large extent the manufacture of the lock parts for both types of narrow stile lock.

To facilitate a full understanding of my invention, it will be best to review the operation of my novel lock with reference to the figures of the drawings.

In Fig. l, the latchbolt 13 and the trigger bolt 14 are in projected dsition, this being the normal position of both bolts w the door is open and the bolts are not dogged in retracted position' The lock parts are now in the posit' shown in Fig. 2. The spring pressure of trigger bolt i against the inclined surface 46a on tumbler through the trigger lug 17, thereby overcoming the spring pressure of the sliding cam- 38 and holding the tumbler in its lower or release position. In this position of the tumbler, or" course, the free slot 55 is aligned relatively to the latchbolt lug 15, so that the latchbolt 13 an move to retracted position.

In 3, latchbolt 33 is in projected position, as in Fig. 2, but t e door is closed and trigger bolt .14 is held de ressed by strike A so that its lug 17' no longer ed tumbler surface 46a. The slidcoacts witn th in ing cam 33 no acts through the engagement between its lug and the inclined tumbler portion id to move the tumbler -pwardly to dogging position, with the dogging surface 37 of the tumbler 34 in opposed relation to the latchbolt lug 'Ehis deadlocks the latchbolt I3.

In Fig. 4, we see what happensw..en one of the keyplug cams 31 rotates from the Fig. 3 position, preparatory to retracting the latchbolt 1 3. The keyplug cam 31 first moves against the top of the sliding cam 38 and depresses this cam. This causes the lug 43 on the sliding cam to coact with surface i? on tumbler 34, whereby to move the tumbler to its lower or release position, all as shown in rig. 4. The tumbler surface 37 has now moved away from latchbolt lug l5, and the free slot 35 is aligned relatively to lug 15. Upon continued rotation, keypli 1g cam 31 coacts with the vertical latchbolt surface 33 and moves latchbolt 13 to retracted position, as shown in Fig. 5.

During its rotation to the Fig. 5 position, keyplug cam 31 has held the sliding cam 38 depressed so that its lug 43 has moved under the portion do on tumbler 34,. Upon moving the latchbolt 13 to retracted position, the cam 31 by its rotation moves away from sliding cam 38, as shown in Fig. 5. Cam 31 simultaneously moves over the upper portion 33a on latchbolt 13, thus acting to hold the latchbolt in retracted position against the pressure of latehbolt spring 1?. This enables the sliding cam 38 to move upwardly by its spring pressure, while acting through its lug 43 to move tumbler .34 upwardly to dogging position, all as shown in Fig. 5, The tumbler surface 45 now coacts with latchbolt lug 15 to dog latchbolt 1'3 in retracted position. When rotating further to its normal neutral position, keyplug cam 31 will, of course, move away from the upper tumbler portion 330.

Fig. 6 shows what happens when the latchbolt 13 is depressed by the strike A during the closing movement or the door. The strike A has, of course, depressed the bolt 13 from the position shown in Fig. 2, with the latchbo-lt lug moving in the free slot 36 of. tumbler 3,4. Sihce movement talges place without rotation of either keyplug cam 31', the sliding cam 33 is not held depressed duthe bolt movement, and the spring pressure of sliding 33 causes this oath to move upwardly as the lug 35 leaves the inclined tumbler portion 44-. Thereby the lug 43 moves above the tumbler portion 46 and does coact with this portion as to move the tiLnbler upwardly. Since the tumbler now remains in the release position shown in Fig. 6, the latchbolt spring 1? can press the latchbolt 13 to projected position in the strike A, as in Fig. 3, when the door reaches closed position.

I believe that those skilled in the art now realize that I have contributed a novel lock structure of very considerable value. Through my invention, I am able to construct a lock that can be mounted on an ext emely narrow door stile, but that is equipped nevertheless with a deadlocking latchbolt controlled by a trigger bolt. Moreover, the deadlocking mechanism of my novel lock operates extremely well, whether controlling a latchbolt or a dead bolt. In fact, the novel features of my deadlocking mechanism, while particularly adapted for narrow stile locks, may be utilized to advantage on other locks. I believe, therefore, that the value of my invention will be fully understood.

I now claim:

1. In a lock of the class described, a latchbolt movable between projected and retracted positions, a tumbler for dogging the latchbolt in projected position, a movable cam, means through which the latchbolt when moving to projected position moves said cam into coacting relation to the tumbler, a spring pressing the cam and acting through said cam when it is in coacting relation to the tumbler to press the tumbler to a position clogging the latchbolt, a trigger normally spring projected and adapted to move to a retracted position through engagement With a strike, a part on said trigger coacting with the tumbler when the trigger is in projected position, and a surface on said tumbler through which the trigger part by its coaction applies the spring pressure of the trigger to overcome the spring pressure of the cam whereby to hold the tumbler out of dogging position. 7

2. In a lock of the class described, a latchbolt movable between projected and retracted positions, a tumbler for dogging the latchbolt in projected position, a trigger nor: mally spring projected and adapted to move to a retracted position through engagement with a strike, a part on said trigger coacting with the tumbler when the trigger is in projected position for holding the tumbler out of dogging relation to the latchbclt, a cam coacting with the tumbler when the latchbolt is projected, a spring pressing said cam and acting through the cam to press the tumbler toward dogging position when the carn is in enacting relation to the tumbler, said cam by its pressure moving the tumbler to dogging position when the trigger is retracted, and a manually operated member adapted to move the said cam and tumbler out of dogging position and for retracting the latchbolt.

3. in a lock of the class described, a latchbolt movable between projected and retracted positions, a tumbler for dogging the latchbolt in projected position, a movable cam, means through which the latchbolt when moving to projected position moves said cam into coacting rela: tion to the tumbler, a spring pressing the cam and acting through the cam when it is in coacting relation to the tumbler for pressing the tumbler to a position clogging the latchbolt, a tumbler surface through which said cam when depressed against the pressure of its spring is adapted to move the tumbler out of dogging position, a manually operated member for so depressing said cam and for retracting the latchbolt, a trigger normally spring projected and adapted to move to a retracteclposition through engagement with a strike, a part on said trigger coacting with the tumbler when the trigger is in projected position, and a surface on said'tumbler through which said trigger part by its coaction applies the spring pres sure of the trigger to overcome the spring pressure of the cam whereby to hold the tumbler out of dogging position.

4. In a lock of the class described, a latchbol t movable between projected and retracted positions, a tumbler movable from a lower position to an upper position to dog the latchbo-lt, a movable cam, means through which the.

latchbolt when moving to projected position moves said cam into coacting relation to the tumbler, a spring press? ing the cam and acting through said cam when his in coacting relation to the tumbler to press the tumbler to said upper position, a tumbler surface through which said V the jdeazllocking surface co 7 cm .whenfi p cs edlas in ep p s of its spring is adapted to move the tumbler downwardly out ofdogging position, a manually {operatedmember for'so depressing said cam and for retracting the latchbolt, a trigger normally spring projected and adapted to move to a retracted position through engagement with a strike, fa part on said triggercoacting with. the tumblertwhenthe trigger is in projected position, and a surface 'on said tumbler through which said trigger part 'oy'its'coaction applies the spring pressure of the trigger to overcome the spring pressure of the cam whereby to hold the tumbler in its lower position out ofdogged relation to the latchbolt.

,is e

dogging position whereby to deadlock the, latchbolt in projected position, a spring pressed cam pressing the tumbler to dogging position when the latchbolt is projected, a surface on said tumbler through which the camtwhen depressed against the pressure of its spring is adapted to move the tumbler out of dogging position,

5. Ina lock of the class described, a latchbolt movwhen'the tumbler is not'held by the trigger, said tumbler having a surface against which said cam part acts for when the cam is depressed,and a manuallyoperated 'moving the tumbler downwardly out of dogging position member for depressing the cam and tumbler and'for retracting the latchbolt.

6. In a lock of the class described, a latchbolt movable between projected and retracted positions, a tumbler plate movable relativelytto the latchbolt and formed with a deadlocking surface, a part onthe latchbolt with which thedeadlocking surfacetcoacts when the tumbler plate is in a dogging position whereby to deadlockthe latchbolt in projected position, said latchbolt part limiting the tumbler plate movement between dogging and release positions, a spring pressed cam pressing the tumbler plate to dogging position when the latchbolt is projected, a trigger normally spring projected and adapted to move to a retracted position through engagement with a strike,

a part on said trigger coacting' with the tumbler plate when the trigger is in projected position, atsurface on said tumbler plate through which said trigger part byits coaction applies the spring pressure of the trigger to overcome the spring pressure of the cam whereby to hold the tumbler plate out of dogging position, and a manually operated member for retracting the latchbolt.

7. Ina lock of the class described, a latchbolt movable between projected and retracted positions, a tumbler movable vertically relatively to the latchbolt and formed with a deadlocking surface, a part on the latchbolt with whichthe. deadlocking surface coacts when the tumbler is in an upper dogging position whereby to deadlock the latchbolt in projected position, said latchbolt part limiting the tumbler movement between'said upper dogging position and a lower release position, a spring pressed is projected, a trigger normally spring projected and adapted to move to a retracted position through engage ment with a strike, a part on said trigger coacting with cam pressing the tumbler upwardly when the latchbolt thetumblerplatewhen the trigger is inprojected'p osition, I

a surfaceon said, tumbler through which said trigger part byits'coaction applies the spring pressure of thetrigge'r .m nually 'QPerated member for retracting the latchbolt, V H

v in a downward direction to overcome the spring pressure ,7 of the camwhereby to hold the tumbler out of dogging 7 position, and a 8; In a lock of the 7 class described, A a latchbolt mov able between projected and retracted positions, a tumbler:

fi n f f parton the latchbolt with which pts when the tumbler is ina,

v movable relatively tothe latchbolt and formed with aj a manually operated member for depressing the cam and tumbler and for retracting the latchbolt, a trigger nor-,

mally spring'projected and adapted to move to a retracted position through engagement with a strike, a part 7 on said trigger coacting with the tumbler when the trigger 'is in projected position,'and a surface on said tumbler through which said trigger part by its coaction applies the spring pressure of the trigger to overcome the spring pressure of the cam whereby to hold the tumbler out of dogging position.

, 9. In a lock'of the class described, a latchbolt movable between projected and retracted positions, a tumbler movable relatively to the latchbolt and formed with a deadlocking surface, a part on the latchbolt with which the deadlocking surface coacts when the tumbler plate is in a dogging position whereby to deadlock the latchbolt in projected position, a spring pressed cam adapted to move the tumbler when the latchbolt is in projected posi- (ion, a portion on the tumbler formed substantially in vertically aligned relation to said deadlocking surface" andthrough which said cam acts to move the tumbler t0 dogging position, a release surface formed'on the'tumbler in opposed relation'to said tumbler portion and through which the carnwhen depressed is adapted ito move the tumbler out of dogging'position, a manually operated member for depressing the cam and tumblerE and tone tracting the latchbolt, a'trigger for controlling the dogging tumbler and for retracting the latchbolt.

12. In a lock of the class des'cribed,a latchbolt movable i it betweentp rojected and retracted'positions, stunner plate 'f'or dogging the latchbolt in projected position, a trigger movement of the tumbler, and a surface through which said trigger. acts formed 'on the tumbler in substantially aligned relation to the said deadlocking and release surfaces and tumbler portions.

10.7111 a lock of the class described, a latchbolt movable between projected and retracted positions, a tumbler, for dogging the latchbolt in projected position, a slide 7 ,7

movable bodily with the latchbolt, a lug on said slide movable into coacting relation to the tumbler as the latchbolt moves to projected position, a spring pressing the slide whereby the lug on the slide when coacting with the tumbler presses the tumbler to dogging position, a

trigger normally spring projected and adapted to move to a retracted position through engagement with a strike, a

lug on said trigger movable against the tumbler through 1 a movement parallel to'the slide lug as the trigger moves to projected position, and a surface 3 on the tumbler through which said trigger lug applies the spring pressure of "the trigger to overcome the spring 'pressure of the" V slide whereby to hold the tuinblerout of dogging relationto thelatchbolt; i v I, V t

11. In a lock arm's, class described, a latchbolt mov-j able between projected and retracted positions, a tumbler forldogging the latchbolt in projected positiom'a trigger normally spring projected and adapted to move' to {a retracted position'through engagement with a strike, a lug on said'trigg'er 'movable against the tumbler as the trigger moves, to projected position whereby to hold' the tumbler out. of dogging relationto the latchbolt, a,

slide movable bodily with the'latchbolt, a lug on said slide'movable into coacting relation to the tumbler "as the latchbolt movesto projected position, a spring pre'ss "ing the slide'whereby the lug onthe slidepres'ses the V tumbler to dog'ging positionwhen the tumbler is tnot held by the trigger lug, said tumbler havinga Tsu'r'face against which the slide lug acts for moving the tumbler out of 'do'gging'po'sitio'n when the slide is depressed, and a manually operated member for depressing'the slide and j normally spring projected and adapted to move to a retracted position through engagement with a strike, a lug on said trigger, a surface on the tumbler plate against which the trigger lug is adapted to move when the trigger moves to projected position whereby to hold the tumbler out of dogging relation to the latchbolt, a spring pressed slide movable bodily with the latchbolt, a lug on said slide, and a portion on the tumbler plate with which the slide lug is engaged when the latchbolt is in projected position whereby the spring pressure of the slide holds the tumbler plate in dogging position when said plate is not held by the trigger lug,

13. in a loci: of the class described, a bolt movable between projected and retracted positions, a tumbler for dogging the bolt, a movable cam, means moving said cam into coacting relation to the tumbler when the bolt moves into projected position, a spring pressing the cam and acting through said cam when it is in coacting relation to the tumbler for pressing the tumbler to a position dogging the bolt, a surface on the tumbler against which the cam acts when depressed against the pressure of said spring to move the tumbler out of dogging relation to the bolt, a manually operated member for so depressing the cam and for projecting and retracting the bolt, a portion on the tumbler against which the cam is adapted to move when the manually operated member moves the bolt to retracted position, and the cam by its spring pressure on said tumbler portion adapted to move the tumbler to dog the bolt in retracted position.

14. In a lock of the class described, a latchbolt spring pressed to projected position and movable to retracted position, a tumbler for dogging the latchbolt, a spring pressed cam coacting with the tumbler when the latchbolt is projected for pressing the tumbler to a position dogging the latchbolt, a surface on the tumbler against which the cam acts when depressed to move the tumbler out of dogging relation to the latchbolt, a manually o erated member for depressing the cam and tumbler and for effecting projecting and retracting movements of the latchbolt, a trigger normally spring projected and adapted to move to retracted position through engagement with a strike, a surface on the tumbler with which the trigger coacts when in projected position to overcome the spring pressure of the cam whereby to hold the tumbler out of dogging position, a portion on the tumbler against which the cam is adapted to move as the manually operated member moves the latchbolt to retracted position, and the cam by its spring pressure on said tumbler portion adapted to move the tumbler to dog the latchbolt in retracted position.

15, In a lock of the class described, a latchbolt normally spring pressed to a projected position, a manually operated member for moving the latchbolt to retracted position against the pressure of its spring, a tumbler movable between dogging and release positions relatively to said latchbolt, a spring pressed cam movable incidental to movement of the latchbolt, a portion on said tumbler with which said cam coacts upon movement of the latchbolt into retracted position by the manually operated member, said tumbler portion formed with a surface through which the cam by its coaction applies its spring pressure to press the tumbler toward dogging position, a part on said latchbolt through which the manually operated member acts after moving the latchbolt to retracted position to hold the latchbolt in said position until the cam pressure moves the tumbler to dogging position, and a surface on said cam against which the manually operated member acts when moving the latchbolt to depress the cam whereby to move the tumbler out of dogging position.

16.111 a lock of the class described, a bolt movable between projected and retracted positions, a tumbler movable between dogging and release positions relatively to the bolt, a movable cam, means whereby said cam is in coacting relation to the tumbler when the bolt is in projected and retracted positions, a spring pressing said cam when in coacting relation to the tumbler for moving the tumbler to dogging position, a surface on the tumbler against which the cam acts when depressed against its spring pressure to move the tumbler out of dogging relation to the bolt, a manually operated member for depressing the cam and tumbler and for projecting and retracting the bolt, said manually operated member releasing the cam when the bolt is moved into projected or retracted position, and a bolt portion through which the manually operated member acts after moving the bolt to retracted position to hold the bolt in said position until the cam pressure moves the tumbler to dogging position.

l7. in a lock of the class described, a latchbolt movable between projected and retracted positions, a tumbler plate formed with a surface for deadlocking the latchbolt, a spring pressed cam movable with the latchbolt, a portion on the tumbler plate with which said spring pressed cam coacts when the latchbolt is in projected position whereby to press the tumbler plate to deadlocking position, said tumbler plate having a surface with which said cam coacts for moving the tumbler plate out of deadlocking position when the cam is depressed, a key operated member for depressing the cam and tumbler plate and for retracting the latchbolt, a trigger normally spring projected and adapted to move to a retracted position through engagement with a strike, a part on said trigger coacting with the tumbler plate when the trigger is in projected position, and a surface on the tumbler plate through which said trigger part by its coaction applies the spring pressure of the trigger to overcome the spring pressure of the cam whereby to hold said plate with its deadlocking surface out of deadlocking relation to the latchbolt.

18. In a lock of the class described, a latchbolt movable between projected and retracted positions, a tumbler plate formed with a slot, a latchbolt part movable in said slot as the latchbolt is moved between projected and retracted positions, said tumbler slot formed with a surface for deadlocking the latchbolt, a spring pressed cam coacting with the tumbler when the latchbolt is in projected position, a portion on the tumbler plate through which said spring pressed cam by its coaction presses the tumbler plate whereby to place its deadlocking surface in dogging relation to the said latchbolt part, said tumbler plate having a surface with which said cam coacts for moving the tumbler plate out of dogging position when the cam is depressed, a manually operated member for depressing the cam and tumbler plate and for retracting the latchbolt, a trigger normally spring projected and adapted to move to a retracted position through engagement with a strike, a part on said trigger coacting with the tumbler plate when the trigger is in projected position, and a surface on the tumbler plate through which said trigger part by its coaction applies the spring pressure of the trigger to overcome the spring pressure of the cam whereby to hold said plate with its deadloclting surface out of dogging relation to the latchbolt.

19. in a lock of the class described, a latchbolt no"- mally spring pressed to a projected position, a manually operated member adapted to move the latchbolt to a retracted position against the pressure of its spring, a tumbler movable into and out of a position for dogging said latchbolt, a spring pressed cam movable incidental to the movement of the latchbolt, a surface on said cam against which said manually operated member when moving the latchbolt acts also to move the cam against the pressure of its spring, said manually operated member upon moving the latchbolt into retracted position being adapted to move away from said cam surface, a portion on said tumbler against which the cam applies its spring pressure when the manually operated member so moves away from the cam surface whereby to press the tumbler ally operated member moves the latchbolt toward reto dogging position, said tiJri-ibler formed with an open References Cited in the file of this atent 7 part past which the cam is adapted to move as the manu- UNITED STATES PATENTS 982,863 Phillips Jan. 31 1911 tracted position, and said cam by its spring pressure mov- I 2,660,875 lewett et a]. Dec. 1, 1953 ing in said open pai't away from the said tumbler portion when the latchbolt moves to retracted position through engagementfwith a strike so that the cam does not then FOREIGN PATENTS move the tumbler to dogging position; 77,03 7 7 Austria June 25, 1919 

